Solve for x
x=10-2y
Solve for y
y=-\frac{x}{2}+5
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2x=20-4y
Subtract 4y from both sides.
\frac{2x}{2}=\frac{20-4y}{2}
Divide both sides by 2.
x=\frac{20-4y}{2}
Dividing by 2 undoes the multiplication by 2.
x=10-2y
Divide 20-4y by 2.
4y=20-2x
Subtract 2x from both sides.
\frac{4y}{4}=\frac{20-2x}{4}
Divide both sides by 4.
y=\frac{20-2x}{4}
Dividing by 4 undoes the multiplication by 4.
y=-\frac{x}{2}+5
Divide 20-2x by 4.
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